Condensed Consolidated Statement of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Total
Beginning balance, amount at Dec. 31, 2017	$ 14	$ 60,560	$ (58,944)	$ 1,630
Beginning balance, shares at Dec. 31, 2017	14,287,556
Share-based compensation		62		62
Issuance of common stock for exercise of stock option, amount		2		2
Issuance of common stock for exercise of stock option, shares	1,100
Net income/(loss)			(63)	(63)
Ending balance, amount at Mar. 31, 2018	$ 14	60,624	(59,007)	1,631
Ending balance, shares at Mar. 31, 2018	14,288,656
Beginning balance, amount at Dec. 31, 2017	$ 14	60,560	(58,944)	1,630
Beginning balance, shares at Dec. 31, 2017	14,287,556
Net income/(loss)				(16)
Ending balance, amount at Jun. 30, 2018	$ 14	60,765	(58,960)	1,819
Ending balance, shares at Jun. 30, 2018	14,308,469
Beginning balance, amount at Mar. 31, 2018	$ 14	60,624	(59,007)	1,631
Beginning balance, shares at Mar. 31, 2018	14,288,656
Issuance of common stock for exercise of stock option, amount		28		28
Issuance of common stock for exercise of stock option, shares	19,813
Net income/(loss)			47	47
Ending balance, amount at Jun. 30, 2018	$ 14	60,765	(58,960)	1,819
Ending balance, shares at Jun. 30, 2018	14,308,469
Beginning balance, amount at Dec. 31, 2018	$ 14	61,153	(59,167)	2,000
Beginning balance, shares at Dec. 31, 2018	14,394,113
Share-based compensation		91		91
Vesting of restricted stock units	2,494
Net income/(loss)			239	239
Ending balance, amount at Mar. 31, 2019	$ 14	61,244	(58,928)	2,330
Ending balance, shares at Mar. 31, 2019	14,396,607
Beginning balance, amount at Dec. 31, 2018	$ 14	61,153	(59,167)	2,000
Beginning balance, shares at Dec. 31, 2018	14,394,113
Net income/(loss)				577
Ending balance, amount at Jun. 30, 2019	$ 15	61,610	(58,590)	3,035
Ending balance, shares at Jun. 30, 2019	14,581,484
Beginning balance, amount at Mar. 31, 2019	$ 14	61,244	(58,928)	2,330
Beginning balance, shares at Mar. 31, 2019	14,396,607
Share-based compensation		95		95
Vesting of restricted stock units	7,498
Issuance of common stock for exercise of stock option, amount	$ 1	271		272
Issuance of common stock for exercise of stock option, shares	177,379
Net income/(loss)			338	338
Ending balance, amount at Jun. 30, 2019	$ 15	$ 61,610	$ (58,590)	$ 3,035
Ending balance, shares at Jun. 30, 2019	14,581,484